Foot x-ray machine



y 1935. H. cs. FISCHER ET AL 2,001,188

FOOT X-RAY MACHINE Filed Sept. 23, 1932 3 Sheets-Sheet 1 May 14, 1935.

H. s; FISCHER El" AL FOOT X-RAY MACHINE Filed Sept. 25, 1932 3 Sheets-Sheet 2 May 14, 1935. H. s. FISCHER El AL 2,001,188

FOOT X-RAY MACHINE Filed Sept. 25, 1932 asheets-shee't s mow/0mm W 72 Patented May 14, 1935 Herman G. Fischer, Chicago, and Howard H. Osborn, Elmwood Park, 111., assignors, by mesne assignments, to X-Ray Shoe Fitter, Inc., Milwaukee, Wis., acorporation of Wisconsin Application September 23, 1932, Serial No. 634,550

Claims. (01. 250-34) 2 This invention relates to X-ray apparatus for fitting shoes, and has for its object broadly the provision of such an apparatus of simple and improved construction I A principal object of theinvention is the pro- .vision of an X-ray apparatus for the fitting of ishoea adapted for use in the ordinary shoe retailstore and in which the image of the foot within the shoemay be viewed with full-protection to the observer against damage from the X- ray; The invention contemplates in this regard construction of .the apparatus to permit observfiance of the foot in the shoe without looking into or toward the X-ray tube or in line with the generated ray and protection against leakage of the generated rays in its cabinet or casing.

Numerous other objects and advantages of the invent-ion will be apparent as it is better under stood from the following description, which,

when taken in connection with the accompanying drawings, discloses a preferredembodiment thereof; a

. Referring to the drawings, i

Figure 1; a vertical front-to-back central sectional view through an apparatus embodying the I invention; r

Fig. 2 is a top plan view thereof;

m Fig. 3 is a transverse horizontal section taken substantially on the line 3-3 of Fig. l; and

- Fig. his a wiring diagram showing the electrical connection and .parts which are or may be provided. 7

The X-ray apparatus embodying. the present invention, as illustrated on the drawings, comprises a casing generally composed of a bottom ll; side walls i2, back wall l3, a top wall l4,.a

The front wall part I1 is form and this front wall part provides an upper front chamber 22 in which is mounted the X-ray tube'23. A suitable closure 24 (of bakelite.) is

arranged beneath the X-ray tube and above the foot receiving pocket 25.

Beneath the screen 2| is arranged a mirror 26 adapted to reflect the image created upon the 1 screen 2| by the X-ray tube. A second mirror 2'! is located rearwardly of the mirror 25 to receive the reflected image and in turn reflect it upwardly to an observation station at the top of the.

casing. The mirrors 26 and 21 are arranged at 90 to each other and at 45 to the horizontal and vertical. r i

Reference character. 28 indicates an eye piece located at the observation station and through which the wearer of the shoe being fitted may look down upon the mirrorZl and observe the reflection of the image created by the X-ray tube. The eye piece is mounted upon an extensible bellows 29 in order that it may be adjusted to a convenient height. A second sight opening 3| is provided in order that a second person, as a parent of a child or the salesman, may also observe the fit of the shoe as reflected in the mirrors. The space between the sight opening and the mirror 21 i is unobstructed and constitutes a viewing well into which none of the rays emanatingfrom the X-ray tube can enter. The sight opening 3| is adapted to be closed by a shutter 32 operable by movement of a hand member 33.

Each of the two sight openings are thus located behind the X-ray tube and out of direct line of the generated rays so that observance of the fit of the shoe does not require observation made in line with the rays or toward the generating tube. The casing is preferably lined with lead upon appropriate inner walls as indicated by reference character in order that leakage likely to damage the observer or other persons within the retail store may be prevented.

The controls for the X-ray circuits are located upon the back of the cabinet and are generally indicated on the drawings by reference character 34. The supply of current to the X-ray tube and the several circuits are typically illustrated in Fig. 4. Viewing Fig. 4 reference characters 35 and 36 indicate line wires for supplying current. From the wire 35 and through a fuse 3'! connection is made to any one of a number of terminals 38 at one side of a primary 33 of a transformer for supplying current to the filament 42,.of the X-ray apparatus. From the primary 39 a wire 43 leads to a switch and from the switch 44 a wire 45 is connected through a fuse 46 with the wire 36.

wire 52 from the filament control to one side of the filament 42, and a wire 53 back to the secondary 48. A pilot light 54 is or may be provided in parallel with the part of the primary 39 to indicate whether or not current is flowing through the circuit.

The primary of the X-ray creating circuit comprises a wire 55 connected to the primary 39 and to one side of the primary 56 of the transformer 51?. From the other side of the primary 56 a wire 58 leads to a terminal 6| at the switch 44. A second terminal on this switch, indicated at 62, is connected through a resistance 63 with the wire 58.

When the switch arm 4'! is manipulated to establish contact with wire 45 it first engages an idle terminal 64. In this position current is flowing through and heating the filament circuit. Further swinging in a clockwise direction, viewing the drawings, causes the switch to make contact between the terminal 62 and the wire 45 and current then flows through wire 35, wire 55, primary 55, wire 58, resistance 63 to switch arm 41 and thence by wire 45 and fuse 46 to line wire 35.

Movement of the switch arm into engagement with the terminal 6| cuts out the resistance 63 and completes a direct circuit for the primary 56. A resistance indicated at 65 may be connected with wires 55 and 58 as protection against surge.

The secondary 66 of transformer :51 is connected by a wire 6'! to the anode 68 of the X-ray tube. The other side of the secondary 66 passes through a milliampmeter 69 and is grounded at H A ground 12 is connected to the filament circuit at 13 and a ground 14 is connected to the core of the transformer 51. The several grounds may be electrically connected as indicated by wire 15.

In order to protect the X-raytube a thermostatic switch 11 is inserted in the line 53 of the filament circuit. A variable resistance 16 is placed across the filament circuit and connected to wires 49 and 53. This resistance acts as a load and may be employed for adjustment of the timing of the thermostaticswitch 17.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will .be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbcfore described being merely a preferred embodiment thereof.

We claim:

1. An X-ray apparatus for use in fitting shoes, which comprises a casing having a platform on which the individual may stand, an X-ray tube in said casing mounted above said platform, and a fluorescent screen mounted in said platform, and means for reflecting an image on said screen for observation.

2. An X-ray apparatus comprising a cabinet having a platform upon which an individual may stand and provided with a foot receiving pocket as part of said platform, in combination with an X-ray tube in said cabinet vertically above said pocket, a fluorescent screen below said pocket, at reflector inclined downwardly from said platform and. beneath said screen, and a wcond reflector inclined upwardly from the first mentioned reflector, said cabinet having above the second reflector an observation station, whereby a foot may be examined without exposure to direct rays from said tube.

3. An X-ray apparatus for use in fitting shoes comprising a casing provided with a sight opening in its upper portion and a reflector in its lower portion positioned to direct rays of light from a lateral source upwardly to the sight opening said casing providing, a platform at one side of the space between the reflector and the sight opening, said platform being adapted to support a person with his weight on the foot to be inspected,

an X-ray tube above the platform arranged to direct its rays downwardly through such foot and along a line obliquely divergent from said space, a fluorescent screen in the path of such raysunderneath the foot and an image receiving reflector adapted to direct ray-created images laterally to the first mentioned reflector, said casing having extended portions housing the tube and image receiving reflector.

4. An X-ray apparatus for use infitting shoes comprising a casing provided with a sight opening in its upper portion and a reflector in its lower portion and having the intervening space unobstructed and. adapted to serve as a viewing well, said reflector being adapted to direct rays of light from a lateral source upwardly in said well, said casing having a reen-trant portion forming a platform at one side of said well adapted to support a person with his weight on the foot to be inspected, an X-ray tube above the platform arranged to direct its rays downwardly through such foot, a fluorescent screen in the path of such rays underneath the platform and a second refiector adapted to direct ray-created images laterally to the first mentioned reflector at an incident angle for reflection to the sight opening, said casing including extended portions housing the X-ray tube, and reflector underneath the platform, and the casing walls below the platform having a rayintercepting lining.

5. An X-ray inspecting apparatus for use in fitting shoes comprising the combination of a casing providing a viewing well having an obliquely placed reflector in its lower portion and flanked at one side of the lower portion of the well by an image receiving reflector adapted to direct light rays to the first mentioned reflector for upward reflection by the latter through the well, a fluoroa scopic screen above the image receiving reflector, a portion of said casing being disposed to form a foot support above said screen, an X-ray tube arranged to direct its rays downwardly through the foot support to the screen, portions of said casing being arranged to form a housing for said tube at one side of the upper portion of the well.

HERMAN G. FISCHER. HOWARD H. OSBORN. 

